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Diffstat (limited to 'system/alpha/h/floppy.h')
| -rw-r--r-- | system/alpha/h/floppy.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/system/alpha/h/floppy.h b/system/alpha/h/floppy.h new file mode 100644 index 000000000..4c3ac023c --- /dev/null +++ b/system/alpha/h/floppy.h @@ -0,0 +1,171 @@ +#ifndef __FLOPPY_H_LOADED +#define __FLOPPY_H_LOADED +/***************************************************************************** + + Copyright © 1993, 1994 Digital Equipment Corporation, + Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, provided +that the copyright notice and this permission notice appear in all copies +of software and supporting documentation, and that the name of Digital not +be used in advertising or publicity pertaining to distribution of the software +without specific, written prior permission. Digital grants this permission +provided that you prominently mark, as not part of the original, any +modifications made to this software or documentation. + +Digital Equipment Corporation disclaims all warranties and/or guarantees +with regard to this software, including all implied warranties of fitness for +a particular purpose and merchantability, and makes no representations +regarding the use of, or the results of the use of, the software and +documentation in terms of correctness, accuracy, reliability, currentness or +otherwise; and you rely on the software, documentation and results solely at +your own risk. + +******************************************************************************/ + +/* + * $Id: floppy.h,v 1.1.1.1 1997/10/30 23:27:15 verghese Exp $; + */ + +/* + * $Log: floppy.h,v $ + * Revision 1.1.1.1 1997/10/30 23:27:15 verghese + * current 10/29/97 + * + * Revision 1.5 1994/08/05 20:13:47 fdh + * Updated Copyright header and RCS $Id: identifier. + * + * Revision 1.4 1994/06/22 15:22:35 rusling + * Fixed up minor OSF build problem. Changed fdacmd() + * definition. + * + * Revision 1.3 1994/06/20 14:18:59 fdh + * Fixup header file preprocessor #include conditionals. + * + * Revision 1.2 1994/06/17 19:34:01 fdh + * Clean-up... + * + * Revision 1.1 1993/06/08 19:56:13 fdh + * Initial revision + * + */ + + + +#define TRUE 1 +#define FALSE 0 +#define REALFLOPPY 1 + +/* pic */ +#define PICBOCW 0x20 +#define PICBIRR 0x20 +#define READIRR 0x0A +#define FDAMASK 0x40 + +/* dma */ +#define DMACMD03 0x08 +#define DMACMD47 0xD0 +#define DMAMODE03 0x0B +#define DMAMODE47 0xD6 +#define DMAXMODE03 0x40B +#define DMAXMODE47 0x4D6 +#define DMAOFFS 0x04 +#define DMALPAG 0x81 +#define DMAHPAG 0x481 +#define DMACNT 0x05 +#define DMAHCNT 0x405 +#define DMACBP 0x0C +#define DMAMASK03 0x0A +#define DMAMASK47 0xD4 + +/* fda */ +#define FDADCR 0x03F2 +#define FDAMSR 0x03F4 +#define FDADR 0x03F5 +#define FDADRR 0x03F7 +#define FDADCB 0x03F7 + +/* dcr */ +#define DCRSELA 0x00 +#define DCRSELB 0x01 +#define DCRSELC 0x02 +#define DCRSELD 0x03 +#define DCRNRES 0x04 +#define DCRENAB 0x08 +#define DCRMTRA 0x10 +#define DCRMTRB 0x20 +#define DCRMTRC 0x40 +#define DCRMTRD 0x80 + +/* msr */ +#define MSRDIO 0x40 +#define MSRRQM 0x80 + +/* drr */ +#define DRR500 0x00 +#define DRR250 0x02 + +/* dcb */ +#define DCBNCHG 0x80 + +/* st0 */ +#define ST0IC 0xC0 +#define ST0NT 0x00 +#define ST0NR 0x08 + +/* st1 */ +#define ST1NW 0x02 + +/* cmd */ +#define NREAD 0x66 +#define NWRITE 0x45 +#define NRECAL 0x07 +#define NSEEK 0x0F +#define NSINTS 0x08 +#define NSPEC 0x03 + +#define FDTOMEM 0 +#define MEMTOFD 1 + +#define NCMD 9 +#define NSTS 7 + +#define UNITNUM 0 +#define UNITSEL (DCRSELA) +#define UNITMTR (DCRMTRA) + +#define lSRT 0xE0 /* 4 mS */ +#define lHUT 0x08 /* 256 mS */ + +#define hSRT 0xC0 /* 4 mS */ +#define hHUT 0x0F /* 256 mS */ + +#define HLT 0x02 /* 4 mS */ +#define ND 0x00 /* Use DMA */ + +int fdactrk; + +static void read_sector(int sec , int loc); +static int get_file_info(char * file2load , int flag); +static void prep_filename(ub * fn , ub * nfn , ub * ext); +static int get_boot_info(void ); +static void load_file(void ); +static int get_sec(int gcluster); +static int get_next_cluster(ui gcluster , ui ifat); +static void fdainit(int rate); +static void fdaspinup(void ); +static void fdaspindown(void ); +static int fdaio(char * buf , int sec , int type); +static void fdacmd(unsigned char cmd[] , int ncmd); +static int fdasts(void ); +static void fdawait(void ); +static void fdasleep(int nmsec); +static void init_pic(void ); + +#define fdREAD 0 /* read command */ +#define fdWRITE 1 /* write command */ + +#endif /* __FLOPPY_H_LOADED */ |